Lock



M. SCHNUR Dec. 4, 1945.

LOCK Filed Oct. 9, 1944 BY Fa/mu l IN V EN TOR;

Patented Dec. 4, 1945 UNITED STATES PATENT OFFICE 4 7 LOCK Mathew Schnur, Chicago, Ill.

Application October 9, 1944, Serial No. 557,885

9 Claims.

door jamb in order to lock the door in closed position.

One of the main objects of the present invention is to provide an improved form of dead-bolt lock in which the bolt need not be withdrawn to permit the door to be closed, and thereafter actuated to, extended position to lock the door closed. In other words, the door is adapted to be closed with the dead-bolt in extended position and without withdrawal of the bolt from such position, and when the door reaches closed position the bolt is effective to lock it in such position.

Another object of the invention is to provide a locking plate on the door jamb which stays in released position until the bolt reaches substantially its locking position, and then operates into locking engagement with the extended bolt to lock the door or the like closed.

panying drawing which illustrates the manner of constructing and using a lock embodyingthe present invention,

In the drawing: Figure 1 is a fragmentary view showing a portion of the outer side of a door' and its cooperat- Another object of the invention is to provide against being pushed back to released position,

or otherwise tampered with, or surreptitiously released when the locking plate is in looking engagement with the bolt,

Another objectof the invention is to provide ing jamb, and also showing a lock embodying the present invention applied thereto;

Figure 2 is a fragmentary sectional view taken substantially on the line 2-2 of Figure 1;

Figure 3 is an elevational view of the lock mechanism applied to the door jamb, with the cover removed and looking from the inner side thereof;

Figure 4 is a sectional view taken substantially on the line 4--4 of Figure 3; I

Figure 5 is a sectional view taken substantially on the line 55 of Figure 3;

Figure 6 is a fragmentary detail view showing one form of means for anchoring one end of the spring element through which the locking plate is actuated into locking engagement with the bolt by the actuating bolt;

Figure 7 is a detail elevational view showing the actuating member which is actuated by the bolt and operates the locking plate into locking engagement with the bolt and the finger carried thereby for releasing the means which'locksthe locking plat in lOCKlIlg' position; and

Figure 8 is another view of the actuating member and finger shown in Figure 7, taken at right angles and from the right as these members are viewed in Figure 7.

Referring now to the drawing, a door is shown fragmentariiy at in, and its cooperating jamb is a lock of the class described having various feashown fragmentarilyat ll.

The dead-bolt I! on the door I0 is shown in extended position. It is moved to extended and retracted positions by mechanism under the control, for example, of a key, combination, knob or the like. This latter mechanism per se forms no part of the present invention, and therefore has not been shown or described. a

The lock of my present invention comprises an angular bracket l5 attachedto the door jamb II and provided at the inner corner thereof with an opening l6 which is adapted to receive the extended bolt 12 upon movement of the door' lll to closed position. A locking plate 11 is pivoted at I8 to the inner side of one leg of the bracket l5. An actuating member'l9is pivoted at 20 to the inner side of the other leg of thelvracket I5." "Ihe actuating member 19 has a detent release memmember operated by the ber 2| fixed to the member IQ for swinging movement with the member I9 about its pivot 20.

A link 22, pivoted at 23 to the inner housing or guard 24, has an outstanding lug 25. A second link 26 is pivoted at 21 to the link 22, and at 28 to the member 2|. A coiled tension spring 29 is connected between the lug 25 and a lug 30 struck out, for example, from the inner housing or guard 24. This spring 29 normally holds the actuating member l9 in its dotted line position a (Figure 3). With the member 19 in the dotted line position a, the nose 3 I, at its free end, is positioned in the opening l6 adjacent the inner surface of the jamb so that upon movement of the door H) to closed position, with the bolt |2 extended-the extended bolt l2 will engage the nose 3| of the actuating member l9 and swing this member I!) counterclockwise (Figure 3) about its p'ivot'ZB to the dotted line position b.

Asecond coiled tension spring 32 is connected between the lug 25 and a' lug 33 on the locking plate As the actuating member I9 is swung counterclockwise (Figure 3) by engagement of the extendedbolt |2 therewith, the detent release member 2| moves toward its full line position as shown in this figure, vraising the link 23 to its full line position through the link 26. In the accompanying upward movement of the lug 25, the spring 32 actuates the locking plate I! clockwise (Figures 4 and about its pivot I8 from released position, as shown in Figure 4, into locking engagement in front of the bolt I2, as shown in Figure 2, to lock the door in closed position.

The spring connection at 32 preferably has suificient lost motion therein so that the locking plate I! will remain in released position until the bolt 2 is in looking position or in position to permit engagement of the locking plate 11 with the bolt I2 'as-shown in Figure 2. The locking plate H is held yieldingly in released position and returned to this position by a'coiled tension spring 35 connected, for example, between a pin 36 on the lockingplate l1 and a lug 31 on the adjacent leg of the bracket IS.

The locking plate I '1 adjacent its free end has a notch forming a shoulder 38 which, upon move- 40 and a lug 43 on the bracket l5. As the locking plate-l1 swings to locking position the detent 49 snaps over the adjacent end of the plate l1 and into locking engagement with the shoulder 38 to lock'theplate I! against being pressed back or surreptitiously released or otherwise tampered with as long as it is in locking position.

The detent release member 2| has a projecting finger 45 which, by cooperation with the other leg of the detent 4B, swings the detent counterclockwise (Figure 4) about its pivot 4| to released position by the movement imparted to the actuating member I9 by the extended bolt |2 in moving the door I0 to closed position. The inner housing or guard 24 is secured in place, for example, to a spacer 48 by screws 48, the spacer being secured to the bracket l5. The guard 24 has an angular lug 49 positioned in juxtaposition to the detent 43, for. example, to hold the detent 4|] against displacement fromits pivot 4| and also to hold the locking plate II in place for swinging movement on its pivot.

The front plate of the lock on the door H) has a leg 50 forming a safety or guard plate for cov- Where the opening I6 is on the inner side of the.

jamb, the bracket or guard plate 53 may be omitted. An inner angular cover is preferably provided as shown at 52 in Figure 2.

The lock operates, in general, as follows:

With the door H) in open position the locking plate i1 is held by the spring 35 in the released position shown in dotted lines toward the left hand side of'the device as it is viewed in Figure 4. The actuating member I9 is held in its position a, as shown in Figure 3, by the spring 29, and the spring 42 holds the detent 40 yieldingly in the position shown in full lines in Figure 4.

As the door I0 is closed with the bolt i2 in extended position, the bolt engages the nose 3| of the actuating member l9 and swings this member counterclockwise about its pivot 20 from position a toward position b. The lost motion in the spring connection 32 permits the actuating member 19 to move free of the locking plate H, or relatively free of this plate, until the extending end of the bolt |2.is in position to permit the locking plate I! to swing into locking engagement in front of the bolt l2, as shown in Figure 2. When the bolt I2 is in position to permit locking engagement of the locking plate I! therewith, the springconnection 32 acts to swing the locking plate I! clockwise (Figure 4) about its pivot I8 and into locking engagement with the bolt' as shown in Figure 2 by the swinging movement of the actuating member I9. The door It is then looked in closed position, and, where bracket 50 is employed, this bracket is positioned as shown in Figure 2.

As the locking plate reaches locking position, its free end snaps past the adjacent leg of the detent 4| which detent springs into locking engagement with the shoulder 38, under the action of the spring 42. The engagement of thedetent 40 with the shoulder "58 locks the plate ll against being pushed back to released position or against being surreptitiously released or otherwise tampered with.

When authorizedopening of the door is desired, the key, combination, knob or the like is manipulated to withdraw the bolt |2 to retracted posi-' tion. The door l0 maythen be swung to open position, whereupon the actuating member i3 is swung to its dotted line position a. as shown in Figure 3. In this swinging movement of the actuating member l9, the finger 45 thereon swings the detent 40 to. released position as shownin dotted in Figure 4, and the locking plate l1 swings to its released position, as shown in dotted lines in Figure 4, under the action of the spring 35.

The embodiment of the invention shown in the,

drawing is for illustrative purposes only, and. it is to be expressly understood that said drawing and the accompanying specification are not. to be construed as a definition of the limits or scope of the invention, reference being had to theappended claims. for that purpose.

I claim: 7

1. In a lock of the class described, in cornbn nation,an angular bracket adapted to be applied to a door jamb and having an opening at the corner thereof adapted to receive an extended bolt on a door upon movement of the door to closed position, a locking plate pivoted to the inner side of. oneleg of saidbracket and normally held in released .position, an actuating member pivoted to the inner side of the other leg of said bracket actuating member by cooperation of the the extended bolt therewith.

2. In a lock of the class described, in combination, an angular bracket adapted to be applied to a door jamb and having an opening at the corner thereof adapted to receive an extended bolt on a door upon movement of the door to closed position, a locking plate pivoted to the inner Side of one leg of said bracket and normally held in released position, anactuating member pivoted to the inner side of the other leg of said bracket and normally held in position to cooperate with and be actuated by the extendedbolt in its movement to locking position, and, means interconnecting said actuating member and said locking plate for actuating said locking plate into locking engagementwith the bolt by the actuation of said actuating member by cooperation of the extended bolt therewith, said last means having lost motion therein so that said locking plate will remain in released position until the boltis in substantially locking position and will be actuated into locking engagement with the bolt as it reaches substantially its locking .po-

sition.

3. In a lock of the class described, in combination, an angular bracket adapted to be applied to a door jamb and having an opening at the corner thereof adapted, to receive an extended bolt on adoor upon movement of the door to closed position, a locking plate pivoted to the inner side of one leg.of said bracket and normally held in released position, an actuating member pivoted to the inner side of the other leg of said bracket and normally held in position to cooperate with and be 'actuated by the extended bolt in its movement to locking position, means interconnecting said actuating member ,andsaid locking plate for actuating said lockin plate into locking engagement with the bolt by the actuation of saidactuating member by cooperation of the extended bolt therewith, said last means having lost motion therein so that said locking plate will remain in released position until the bolt is in substantially locking position and will be actuated into locking engagement with the bolt as it reaches substantially its locking position, and means operable into locking engagement with the locking plate to lock said plate against being surreptitously released or otherwise tampered with when the locking plate is in locking engagement with said bolt.

4. In a lock of the class described, in combination, an angular bracket adapted to be applied to a door jamb and having an opening at the corner thereof adapted to receive an extended bolt on a door upon movement of the door to closed posi- 10st motion therein so that said locking plate will remain in" released position until the bolt is in substantiallylocking position and will be actuated into lockin engagement with the bolt as it reaches substantially its locking position, means operable into locking engagement with the locking'plate to locksaid plate against being surreptitiously released or otherwise tampered with when the locking plate is in locking engagement with said bolt, said last meanscomprising a detent having a spring for actuating same to looking position, and means on said actuating member for releasing said detent upon withdrawal'of,

the bolt from looking engagement with said looking plate.- 1 l i 5. In a lock of "the class described, in combination, an angular bracket adapted to be applied to a door jamb and having "an opening'lat the corner thereof adapted to receive an extended bolt on a door upon movement of the door to closed position, a locking plate pivoted to the inner side of one leg f said bracket, a spring connected between said lockingplate and means on said bracket for normally holding said platein released position, an actuating member pivoted to the innerside of the other leg of said bracket, a spring connected between said actuating member and means on said bracket and normally holding said actuating member in projected position in the bolt receiving opening in said bracket to cooperate with and be actuated by the extended bolt in its movement to locking position, and-a spring connection between said actuating member and said locking plate for actuating said lock-, ing plate lntolocking engagement with the bolt by the actuation of said actuating member by cooperation with the extended bolt.

6. In a lock of the class described, in combination, an angular bracket adapted to be applied to a door jamb and having an opening at the corner thereof adapted to receive an extended bolt on a door upon movement of the door to closed position, a lockin plate pivoted to the inner side of one leg of said bracket, a spring connected between said locking plate and means on said bracket for normally holding said plate in released position, an actuating member pivoted to the inner side of theother leg of said bracket, a spring connected between said actuating member and means on said bracket and normally holding said actuating member in projected position in the bolt receiving opening in said bracket to cooperate with and be actuated bythe extended bolt in its movement to locking position, and a spring connection between said actuating member and said locking plate for actuating said locking plate into locking engagement with the bolt by the actuation of said actuating member by cooperation with the extended bolt, said last spring connection having lost motion therein so that said locking plate will remain in released position until the bolt is in substantially locking position and will be actuated into locking engagement with the bolt as it reaches substantially it locking position.

7. In a lock of the class described, in combination, an angular bracket adapted to be applied to a door lamb and having an opening at the corner thereof adapted to receive an extended bolt on a door upon movement of the door to closed position, a locking plate pivoted to the inner side of one leg of said bracket, a spring connected between said locking plate and means on said bracket for normally holding said tended bolt therewith, said last meansi having,

plate in released position, an-v actuating memberpivoted to the inner :sideyof the other leg of said bracket, a springconnected between said actuating member and means on said bracket and normally holding said actuating member in projected position inthe bolt receiving opening in said :bracket to cooperate withandbe actuated by the extended bolt in its movement to locking position, aspring connection between said.aotu

ating member and said locking plate for actuating said lockingplateinto locking engagement with the bolt by the actuation of said actuating member by.-cooperationwith the extended belt, a. ,detentpivotedto the inner side of the leg of the bracket to which :said locking, plate is piv oted, a spring connected between said detent and means on said bracket for actuating said detent into lockingen agement with the locking plate ,tolock said plate :against being. surreptitiously released -1 otherwise tampered with when the locking plate is i locking en eme with said bolt; and a finger; on said actuatin member for releasingsaid detent from said locking plate upon withdrawal of the bolt ,from looking en: gagement withsaidiplatei; V

In a lockof the class described, in combination, .an, angular ,bracket adapted to be appliedto. a door lamb and havin .an, Opening at the-corner thereof adapted :to receive anaextended bolton a door upon movement or" the door to closed position, a locking plate pivoted t0 the inner side of one leg of said bracket, a spring connected betvueensaid locking plate and means on said bracket for normally holding said plate in released. position, an. actuating member pivoted to the inner side of the other leg of said bracket, aspring connected between said actuating member and means on said bracket and normally holding said actuating member in projected position in the bolt receiving opening in said bracket to cooperate with and be actuated by. the extended bolt in its movement to locking position, a spring connection between, said actuating member and said locking plate for actuating said locking plate into locking engagement with theibolt by the actuation of. said actuating member by: cooperation with the extended belt, a detent-pivoted to the inner side of the leg of the bracket to which, said locking member is pivoted, a,.spring connected between said detent and means on said bracket for actuating said detent into locking engagement with the locking plate to lock said plate against being surreptitiously.

released or otherwise tampered with when the locking plate is in locking engagement with said bolt, a finger on said actuating member for releasing said detent from said locking plate upon "withdrawal of the bolt from locking engagement with said plate, and inner guard means carried by said bracket and having a lug in juxtaposition to said detent for preventingdisplacement of the detent from its pivot.

9. In a lock of the class described, in .comb i nation, an angular bracket adapted to be applied to a door jamb and having an] opening at the --corner thereof adapted to receive an extended bolt on a door upon movement of the door to closed position, a locking plate pivoted to the inner side of one'leg of said bracket, a spring connected between said locking plate and means on said bracket for normally holding said plate in released position, an actuating member pivoted to the inner side of the other leg of said bracket, a spring connected between said actuating'mem- --ber and means on said bracket and normally pivoted to the inner side of the leg of the bracket to which said locking member is pivoted, a spring connected between said detent and means on said bracket for actuating said detent into locking engagement with the locking plate to lock said plate against being surreptitiously released or otherwise tampered with when the locking plate is in locking engagement with said belt, a finger on said actuating member for releasing said detent from said locking plate upon withdrawalof the bolt from locking engagement with said plate, inner guard means carried bysaid bracket and having a lug in juxtaposition to said detent for preventing displacement of the detent from its pivot, and linkage means comprising links pivoted to said inner guard, to saidfinge'r", and to" each other for actuating said actuating member and said finger by said second spring. I

MATHEW SCHNUR. 

